US20050040658A1 - Snow load lever with two part pawl lever construction - Google Patents
Snow load lever with two part pawl lever construction Download PDFInfo
- Publication number
- US20050040658A1 US20050040658A1 US10/498,164 US49816404A US2005040658A1 US 20050040658 A1 US20050040658 A1 US 20050040658A1 US 49816404 A US49816404 A US 49816404A US 2005040658 A1 US2005040658 A1 US 2005040658A1
- Authority
- US
- United States
- Prior art keywords
- toggle
- pawl
- lever
- ratchet
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
- E05B81/15—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt with means preventing the detent to return to its latching position before the bolt has moved to the unlatched position
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/23—Vehicle door latches
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1044—Multiple head
- Y10T292/1045—Operating means
- Y10T292/1047—Closure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1062—Spring retracted
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/1082—Motor
Definitions
- the present invention relates to a deck lid or liftgate latch with a mechanism to maintain the latch, once released, in the released position even when the deck lid itself is subject to a load, such as snow.
- the releasing of the deck lid/liftgate can be accomplished by a person inside the automobile. Annoyingly that person does not know that the latch has not unlatched until he or she is outside of the vehicle trying to lift the lid or liftgate.
- the present invention relates to a latch for a deck lid or liftgate with a snow load or other load type block to prevent immediate re-engagement of the latch once the latch has been deliberately released.
- This block acts on a pawl lever rather than directly on the pawl to essentially eliminate lock up of the pawl.
- the latch itself comprises a ratchet moveable between a latched position and an unlatched position.
- the ratchet is urged under spring pressure to move to the unlatched position.
- a pawl is moveable between an engaged position and a released position. The pawl is urged under spring pressure to move to the engaged position holding the ratchet in the latched position.
- An actuator moves the pawl through a separate pawl lever away from the engaged position.
- a load lever is moveable to and from a blocking position. The load lever is biased to move to the blocking position to hold the pawl lever where it prevents the pawl from immediately returning to the engaged position after the pawl has been moved to the released position. This allows the ratchet, even when the deck lid is under load, to spring to the unlatched position, allowing the deck lid or liftgate to be opened.
- the ratchet when moved from the unlatched position back to the latched position through impact of a striker closing the latch causes the load lever to be pushed away from the blocking position allowing the pawl to spring back to the ratchet engaged position.
- a vehicle latch having a ratchet moveable between a latched position and a unlatched position.
- the ratchet is urged under spring pressure to move to the unlatched position.
- a pawl is moveable between a ratchet engaged position and a ratchet released position.
- the pawl is urged under spring pressure to move to the ratchet engaged position holding the ratchet in the latched position.
- a pawl lever engages the pawl.
- An actuator moves the pawl lever which in turn moves the pawl away from the ratchet engaged position.
- a load lever is moveable to and away from a blocking position. The load lever is biased to the blocking position.
- the load lever moves to the blocking position after pawl lever moves the pawl to the released position and holds the pawl and prevents the pawl from returning to the ratchet engaged position thereby allowing the ratchet to move to the unlatched position.
- a slapping lever is moved by the ratchet when the ratchet is moved from the latched position to the unlatched position, responsively moving the load lever from the pawl blocking position allowing the pawl to return to the ratchet engaged position.
- FIGS. 1 through 8 are top views of the latch with the top cover removed showing the different operating phases of the latch with the snow load lever and two part pawl lever construction according to a preferred embodiment of the present invention
- FIG. 9 is an exploded perspective view of the latch.
- the latch of the present invention is generally indicated at 1 and includes a power release actuator mechanism formed by a motor 3 , a main gear 7 , a toggle 11 , a pawl lever 21 , a pawl 22 and a ratchet 29 . Also provided in accordance with the present invention is a snow load lever 41 .
- the output shaft of motor 3 drives a pivot gear 5 which rotates the main gear 7 , which is journal mounted to the housing, comprising a base plate 37 and a cover plate 39 .
- Gear 7 is provided with a boss or pin 9 that orbits through a circular path with driven rotation of gear 7 .
- Toggle 11 which is pivotally mounted on a toggle shaft 17 includes a slapping lever 13 which is mounted to swing relative to the main body of the toggle 11 .
- a slapper spring 15 provides a firm, yet movable connection between the slapping lever and the main body of the toggle 11 .
- the toggle 11 is also held in a movable yet firm position within the latch by toggle spring 19 .
- Spring 19 center biases toggle 11 into a ready position or a blocking position.
- Toggle II has a V-shaped cam surface 12 .
- Load lever 41 is commonly mounted on toggle shaft 17 .
- Load lever 41 is generally elongate having an embossed cam surface 43 .
- cam surface 43 is arcuate.
- Cam surface 43 cooperates with the underside of the slapping lever 13 .
- Load lever 41 pivots between a blocking position and a ready position. In the ready position, the load lever 41 is out of the travel of pawl lever 21 . In the blocking position, the load lever 41 engages the pawl lever 21 to retain the pawl lever 21 in the pulled position.
- Pawl lever 21 and the pawl 22 are both mounted on a common pawl pivot 24 and movable independently of one another.
- Pawl 22 is encased by a plastic cover or encapsulation 23 .
- Pawl 22 is moveable between an engaged position and a released position. The pawl 22 is biased to move to the engaged position holding the ratchet 29 in the latched position. In the released position, the pawl 22 is pivoted away allowing the ratchet 29 to rotate.
- Pawl 22 has a tab 26 extending out of the general plane of the pawl and engages with pawl lever 21 .
- Pawl lever 21 is generally elongate having an arm 28 extending out of the housing.
- the distal end of pawl lever has a spring 27 that biases the pawl lever 21 to a ready position.
- the ratchet 29 is mounted to the housing by a pivot pin 35 .
- the ratchet 29 is covered by encapsulation 31 .
- the ratchet 29 is moveable between a latched position and an unlatched position.
- the ratchet 29 is urged under spring pressure to move to the unlatched position.
- the ratchet has two detents 51 , 53 that cooperate with the pawl 22 to close the latch in a secondary and primary closed positions.
- the ratchet 29 cooperates with a mouth 36 of the base plate 37 to engage a striker 50 and latch thereto and unlatch therefrom.
- the entire mechanism is contained within a base plate 37 and a cover 39 , which are preferably made of plastic.
- a steel reinforcement plate 141 then fits over the plastic cover.
- FIGS. 1 through 5 show the various different phases of the cycle of operation of the release actuator mechanism.
- FIG. 1 shows the start of the release cycle.
- the boss 9 of gear 7 is in its “home” position.
- the motor 3 operates to turn gear 7 orbiting boss 9 in the clockwise direction.
- Toggle 11 is in a first position.
- Gear 7 is able to rotate as boss 9 travels or follows along cam surface 12 .
- FIG. 2 shows the priming phase of the mechanism.
- Boss 9 has orbited along the cam surface 12 , rotating the toggle 11 to a second position.
- FIG. 3 shows the release phase of the cycle.
- the gear 7 has continued to rotate through the operation of the motor such that boss 9 engages and pushes on the pawl lever 21 .
- the pawl lever 21 in turn engages the pawl 22 to also push the pawl away to the released position.
- the ratchet is able to rotate to the open or unlatched position i.e., a position in which it would release the striker.
- ratchet 29 has a protrusion 30 .
- the protrusion engages the toggle slapping lever 13 .
- Slapping lever 13 must be pushed out of the way by the ratchet to clear the slapping lever past the ratchet, i.e., the slapping lever is pivoted in the direction of arrow A shown in FIG. 3 of the drawings as the ratchet opens to allow the ratchet protrusion 30 to pass the slapping lever 13 .
- the slapping lever 13 returns to the neutral position, as shown in FIG. 4 , once the ratchet 29 has moved to its unlatched position.
- the pawl lever 21 has moved back to its FIG. 1 position while the pawl 22 itself remains in the FIG. 3 position locked by the ratchet in its open position.
- FIG. 8 of the drawings shows the closing phase which is the final phase of the operating cycle of the mechanism.
- This closing phase is initiated by impacting the ratchet 29 with the striker which causes the ratchet 29 to move back to its latched or closed position. As shown in FIG. 8 , this frees the pawl 22 to spring back to its engaged position and prevent the ratchet 29 from opening until the next operating cycle of the mechanism.
- the protrusion 30 engages the other side of the slapping lever 13 to push the slapping lever in the direction of arrow B as shown in FIG. 8 of the drawings. This in turn causes the toggle 11 to move back to the FIG. 1 position moving toggle portion 11 b out the orbital path of the boss 9 .
- the slapping lever 13 then returns under spring pressure to its neutral position and the mechanism is now ready for its next operating cycle.
- the ratchet itself provides a resetting of the snow load mechanism of the present invention.
- Load lever 41 is pivotally mounted on toggle shaft 17 . Load lever 41 engages pawl lever 21 preferably at tab 21 A.
- the load lever 41 When the load lever 41 is in the position as shown in FIGS. 1 and 2 , the load lever 41 has no impact on the operation of the latch. However, as the pawl lever 21 is moved by the boss 9 into the release phase the pawl lever 21 is pushed past the end of the load lever 41 .
- the load lever under the pressure of spring 15 moves in the direction of arrow B as shown in FIG. 3 to a second position shown in FIGS. 4 and 5 of the drawings. In this second position, the end of the load lever 41 engages the pawl lever 21 at tab 21 A.
- the load lever 41 holds the pawl lever 21 in the pulled position to maintain the pawl 22 in the released position.
- the ratchet 29 is now free to move from the latched position to the unlatched position. If the deck lid or liftgate is loaded, the pawl 22 remains in the released position even after the release cycle of the latch 1 has completed.
- the load lever 41 operates in the same manner even if the pawl lever 21 is actuated manually through manipulation of arm 28 .
- the resetting of the snow load lever 41 back to its ready or non-blocking position occurs with the end of opening phase of the latch cycle.
- the protrusion 30 pushes the slapping lever 13 as shown in FIG. 4 as the ratchet 29 is rotating from the latched position to the unlatched position.
- the slapping lever 13 cooperates with the cam surface 43 to push the snow lever 41 in the direction of arrow C in FIG. 4 away from the blocking position. However, this does not occur until the ratchet 29 is fully unlatched ensuring the release of the latch.
- the load lever 41 and the pawl lever 21 do not move on the closing of the latch 1 , when the ratchet 29 moves from the unlatched to the latched position. This feature ensures that the load lever 41 does not inadvertently engage, preventing the latch 11 from latching.
- the snow load function only operates during the opening cycle ensuring full release of the latch from the primary latch and secondary latch positions to the full open position.
- the load lever 41 may be incorporated into a latch that does not incorporate the power release function as described above.
- the load lever 41 may be pivotally mounted on the housing base 37 and biased to be in either the blocking position or the ready position.
- the snow load lever 41 does not directly engage the pawl 22 which eliminates pawl lock up that would adversely affect operation of the latch.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
- The present invention relates to a deck lid or liftgate latch with a mechanism to maintain the latch, once released, in the released position even when the deck lid itself is subject to a load, such as snow.
- It is a relatively common occurrence that the pawl of a deck lid latch or of a liftgate latch of a vehicle once released from the engaged or latched position will immediately return to that position preventing the deck lid or liftgate from opening. This happens when there is weight e.g., the weight of snow, the weight of a person etc. on the deck lid or liftgate causing the latch once released to immediately re-engage. The same is true if the seals or pop-up of the lid or liftgate do not “pop-up”.
- The releasing of the deck lid/liftgate can be accomplished by a person inside the automobile. Annoyingly that person does not know that the latch has not unlatched until he or she is outside of the vehicle trying to lift the lid or liftgate.
- In the past, there have been latches with ratchet blocks to prevent the situation described above. However, these prior art blocks interact directly with the pawl resulting in pawl lock up problems. When these problems occur the ratchet cannot be held by the pawl in a position to positively engage the striker in which case the latch cannot properly latch and close the deck lid or liftgate.
- The present invention relates to a latch for a deck lid or liftgate with a snow load or other load type block to prevent immediate re-engagement of the latch once the latch has been deliberately released. This block acts on a pawl lever rather than directly on the pawl to essentially eliminate lock up of the pawl.
- The latch itself comprises a ratchet moveable between a latched position and an unlatched position. The ratchet is urged under spring pressure to move to the unlatched position. A pawl is moveable between an engaged position and a released position. The pawl is urged under spring pressure to move to the engaged position holding the ratchet in the latched position. An actuator moves the pawl through a separate pawl lever away from the engaged position. A load lever is moveable to and from a blocking position. The load lever is biased to move to the blocking position to hold the pawl lever where it prevents the pawl from immediately returning to the engaged position after the pawl has been moved to the released position. This allows the ratchet, even when the deck lid is under load, to spring to the unlatched position, allowing the deck lid or liftgate to be opened.
- The ratchet when moved from the unlatched position back to the latched position through impact of a striker closing the latch causes the load lever to be pushed away from the blocking position allowing the pawl to spring back to the ratchet engaged position.
- According to one aspect of the invention, there is provided a vehicle latch having a ratchet moveable between a latched position and a unlatched position. The ratchet is urged under spring pressure to move to the unlatched position. A pawl is moveable between a ratchet engaged position and a ratchet released position. The pawl is urged under spring pressure to move to the ratchet engaged position holding the ratchet in the latched position. A pawl lever engages the pawl. An actuator moves the pawl lever which in turn moves the pawl away from the ratchet engaged position. A load lever is moveable to and away from a blocking position. The load lever is biased to the blocking position. The load lever moves to the blocking position after pawl lever moves the pawl to the released position and holds the pawl and prevents the pawl from returning to the ratchet engaged position thereby allowing the ratchet to move to the unlatched position. A slapping lever is moved by the ratchet when the ratchet is moved from the latched position to the unlatched position, responsively moving the load lever from the pawl blocking position allowing the pawl to return to the ratchet engaged position.
- The above as well as other advantages and features of the present invention will be described in greater detail according to the preferred embodiments of the present invention in which;
-
FIGS. 1 through 8 are top views of the latch with the top cover removed showing the different operating phases of the latch with the snow load lever and two part pawl lever construction according to a preferred embodiment of the present invention; -
FIG. 9 is an exploded perspective view of the latch. - Referring to
FIG. 1 , the latch of the present invention is generally indicated at 1 and includes a power release actuator mechanism formed by amotor 3, amain gear 7, atoggle 11, apawl lever 21, apawl 22 and aratchet 29. Also provided in accordance with the present invention is asnow load lever 41. - The output shaft of
motor 3 drives apivot gear 5 which rotates themain gear 7, which is journal mounted to the housing, comprising abase plate 37 and acover plate 39. Gear 7 is provided with a boss orpin 9 that orbits through a circular path with driven rotation ofgear 7. -
Toggle 11, which is pivotally mounted on atoggle shaft 17 includes aslapping lever 13 which is mounted to swing relative to the main body of thetoggle 11. Aslapper spring 15 provides a firm, yet movable connection between the slapping lever and the main body of thetoggle 11. Thetoggle 11 is also held in a movable yet firm position within the latch bytoggle spring 19.Spring 19 center biases toggle 11 into a ready position or a blocking position. Toggle II has a V-shaped cam surface 12. -
Load lever 41 is commonly mounted ontoggle shaft 17.Load lever 41 is generally elongate having an embossedcam surface 43. Preferably,cam surface 43 is arcuate.Cam surface 43 cooperates with the underside of the slappinglever 13. Load lever 41 pivots between a blocking position and a ready position. In the ready position, theload lever 41 is out of the travel ofpawl lever 21. In the blocking position, theload lever 41 engages thepawl lever 21 to retain thepawl lever 21 in the pulled position. - Pawl
lever 21 and thepawl 22 are both mounted on acommon pawl pivot 24 and movable independently of one another. Pawl 22 is encased by a plastic cover orencapsulation 23. Pawl 22 is moveable between an engaged position and a released position. Thepawl 22 is biased to move to the engaged position holding theratchet 29 in the latched position. In the released position, thepawl 22 is pivoted away allowing theratchet 29 to rotate. - Pawl 22 has a
tab 26 extending out of the general plane of the pawl and engages withpawl lever 21.Pawl lever 21 is generally elongate having anarm 28 extending out of the housing. The distal end of pawl lever has aspring 27 that biases thepawl lever 21 to a ready position. - The
ratchet 29 is mounted to the housing by apivot pin 35. Theratchet 29 is covered byencapsulation 31. Theratchet 29 is moveable between a latched position and an unlatched position. Theratchet 29 is urged under spring pressure to move to the unlatched position. The ratchet has twodetents pawl 22 to close the latch in a secondary and primary closed positions. Theratchet 29 cooperates with amouth 36 of thebase plate 37 to engage astriker 50 and latch thereto and unlatch therefrom. - The entire mechanism is contained within a
base plate 37 and acover 39, which are preferably made of plastic. Asteel reinforcement plate 141 then fits over the plastic cover. - As earlier mentioned in the description
FIGS. 1 through 5 show the various different phases of the cycle of operation of the release actuator mechanism. -
FIG. 1 shows the start of the release cycle. Theboss 9 ofgear 7 is in its “home” position. Themotor 3 operates to turngear 7orbiting boss 9 in the clockwise direction.Toggle 11 is in a first position.Gear 7 is able to rotate asboss 9 travels or follows alongcam surface 12. -
FIG. 2 shows the priming phase of the mechanism.Boss 9 has orbited along thecam surface 12, rotating thetoggle 11 to a second position. -
FIG. 3 shows the release phase of the cycle. In this phase, thegear 7 has continued to rotate through the operation of the motor such thatboss 9 engages and pushes on thepawl lever 21. Thepawl lever 21 in turn engages thepawl 22 to also push the pawl away to the released position. The ratchet is able to rotate to the open or unlatched position i.e., a position in which it would release the striker. - During this phase, the
boss 9 has been continuing to orbit past thepawl lever 21 until theboss 9 encounters toggleportion 11 b. At this point, thetoggle 11 blocks any further rotation of thegear 9 and stalls the operation of themotor 3. This causes themotor 9 to shut down until another operating cycle of the mechanism. - A number of additional steps occur during the end of opening phase of the cycle. First of all, ratchet 29 has a
protrusion 30. As the ratchet rotates from the latched position to the unlatched position, the protrusion engages thetoggle slapping lever 13. Slappinglever 13 must be pushed out of the way by the ratchet to clear the slapping lever past the ratchet, i.e., the slapping lever is pivoted in the direction of arrow A shown inFIG. 3 of the drawings as the ratchet opens to allow theratchet protrusion 30 to pass the slappinglever 13. - Through the provision of the slapper spring, the slapping
lever 13 returns to the neutral position, as shown inFIG. 4 , once theratchet 29 has moved to its unlatched position. Thepawl lever 21 has moved back to itsFIG. 1 position while thepawl 22 itself remains in theFIG. 3 position locked by the ratchet in its open position. -
FIG. 8 of the drawings shows the closing phase which is the final phase of the operating cycle of the mechanism. This closing phase is initiated by impacting theratchet 29 with the striker which causes theratchet 29 to move back to its latched or closed position. As shown inFIG. 8 , this frees thepawl 22 to spring back to its engaged position and prevent theratchet 29 from opening until the next operating cycle of the mechanism. - As the
ratchet 29 is closed by the impact with the striker, theprotrusion 30 engages the other side of the slappinglever 13 to push the slapping lever in the direction of arrow B as shown inFIG. 8 of the drawings. This in turn causes thetoggle 11 to move back to theFIG. 1 position movingtoggle portion 11 b out the orbital path of theboss 9. The slappinglever 13 then returns under spring pressure to its neutral position and the mechanism is now ready for its next operating cycle. - A number of unique features result from the above operation of the mechanism. For example, the ratchet itself provides a resetting of the snow load mechanism of the present invention.
- The feature of the invention which prevents loads such as snow loads from preventing proper operation of the latch will now be described.
-
Load lever 41 is pivotally mounted ontoggle shaft 17.Load lever 41 engagespawl lever 21 preferably at tab 21A. When theload lever 41 is in the position as shown inFIGS. 1 and 2 , theload lever 41 has no impact on the operation of the latch. However, as thepawl lever 21 is moved by theboss 9 into the release phase thepawl lever 21 is pushed past the end of theload lever 41. The load lever under the pressure ofspring 15 moves in the direction of arrow B as shown inFIG. 3 to a second position shown inFIGS. 4 and 5 of the drawings. In this second position, the end of theload lever 41 engages thepawl lever 21 at tab 21A. Theload lever 41 holds thepawl lever 21 in the pulled position to maintain thepawl 22 in the released position. Theratchet 29 is now free to move from the latched position to the unlatched position. If the deck lid or liftgate is loaded, thepawl 22 remains in the released position even after the release cycle of thelatch 1 has completed. - The
load lever 41 operates in the same manner even if thepawl lever 21 is actuated manually through manipulation ofarm 28. - The resetting of the
snow load lever 41 back to its ready or non-blocking position occurs with the end of opening phase of the latch cycle. In this phase, as earlier described, theprotrusion 30 pushes the slappinglever 13 as shown inFIG. 4 as theratchet 29 is rotating from the latched position to the unlatched position. The slappinglever 13 cooperates with thecam surface 43 to push thesnow lever 41 in the direction of arrow C inFIG. 4 away from the blocking position. However, this does not occur until theratchet 29 is fully unlatched ensuring the release of the latch. - The
load lever 41 and thepawl lever 21 do not move on the closing of thelatch 1, when theratchet 29 moves from the unlatched to the latched position. This feature ensures that theload lever 41 does not inadvertently engage, preventing thelatch 11 from latching. The snow load function only operates during the opening cycle ensuring full release of the latch from the primary latch and secondary latch positions to the full open position. - Although the drawings show, and the description immediately above relates to the
protrusion 30 acting on thesnow load lever 41 through theslapper lever 13, it is equally possible to have theratchet 29 act directly on thesnow load lever 41 to reset it to theFIGS. 1 and 2 position. - Further, it also apparent that the
load lever 41 may be incorporated into a latch that does not incorporate the power release function as described above. Theload lever 41 may be pivotally mounted on thehousing base 37 and biased to be in either the blocking position or the ready position. The Here it should be noted that thesnow load lever 41 does not directly engage thepawl 22 which eliminates pawl lock up that would adversely affect operation of the latch. - Although various preferred embodiments of the present invention have been described in detail, it will be appreciated by those skilled in the art that variations may be made without departing from the scope of the appended claims.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/498,164 US7467815B2 (en) | 2001-12-12 | 2002-12-10 | Snow load lever with two part pawl lever construction |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US34088701P | 2001-12-12 | 2001-12-12 | |
PCT/CA2002/001912 WO2003054332A1 (en) | 2001-12-12 | 2002-12-10 | Snow load lever with two part pawl lever construction |
US10/498,164 US7467815B2 (en) | 2001-12-12 | 2002-12-10 | Snow load lever with two part pawl lever construction |
Publications (2)
Publication Number | Publication Date |
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US20050040658A1 true US20050040658A1 (en) | 2005-02-24 |
US7467815B2 US7467815B2 (en) | 2008-12-23 |
Family
ID=23335347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/498,164 Expired - Lifetime US7467815B2 (en) | 2001-12-12 | 2002-12-10 | Snow load lever with two part pawl lever construction |
Country Status (4)
Country | Link |
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US (1) | US7467815B2 (en) |
AU (1) | AU2002347172A1 (en) |
CA (1) | CA2469258C (en) |
WO (1) | WO2003054332A1 (en) |
Cited By (8)
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CN104120927A (en) * | 2013-04-29 | 2014-10-29 | 通用汽车环球科技运作有限责任公司 | Device and method for controllinglatch assembly release force |
US20150197966A1 (en) * | 2014-01-10 | 2015-07-16 | Christian Regnault | Apparatus and method for preventing undesired latch release |
US20150233157A1 (en) * | 2011-03-04 | 2015-08-20 | Kiekert Aktiengesellschaft | Motor vehicle door lock |
US20170074007A1 (en) * | 2014-05-07 | 2017-03-16 | John Phillip Chevalier | Closure and latching mechanisms |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150233157A1 (en) * | 2011-03-04 | 2015-08-20 | Kiekert Aktiengesellschaft | Motor vehicle door lock |
US9677305B2 (en) * | 2011-03-04 | 2017-06-13 | Kiekert Aktiengesellschaft | Motor vehicle door lock |
CN104120927A (en) * | 2013-04-29 | 2014-10-29 | 通用汽车环球科技运作有限责任公司 | Device and method for controllinglatch assembly release force |
US20150197966A1 (en) * | 2014-01-10 | 2015-07-16 | Christian Regnault | Apparatus and method for preventing undesired latch release |
US10316551B2 (en) * | 2014-01-10 | 2019-06-11 | Inteva Products, Llc | Apparatus and method for preventing undesired latch release |
US20170074007A1 (en) * | 2014-05-07 | 2017-03-16 | John Phillip Chevalier | Closure and latching mechanisms |
US10590682B2 (en) * | 2014-05-07 | 2020-03-17 | John Phillip Chevalier | Closure and latching mechanisms |
US20180195322A1 (en) * | 2015-07-03 | 2018-07-12 | Kiekert Ag | Motor vehicle lock |
US11098508B2 (en) * | 2015-07-03 | 2021-08-24 | Kiekert Ag | Motor vehicle lock |
DE102017214979A1 (en) * | 2017-07-21 | 2019-01-24 | Witte Automotive Gmbh | Lock with snow load, damping and / or storage function |
CN107675968A (en) * | 2017-10-31 | 2018-02-09 | 无锡瑞林控制软件有限公司 | Self-priming tail door lock driving mechanism |
CN110984732A (en) * | 2019-12-31 | 2020-04-10 | 无锡忻润汽车安全***有限公司 | Mechanism for ensuring unlocking state of tail door under frozen condition |
Also Published As
Publication number | Publication date |
---|---|
CA2469258A1 (en) | 2003-07-03 |
WO2003054332A1 (en) | 2003-07-03 |
CA2469258C (en) | 2010-11-16 |
AU2002347172A1 (en) | 2003-07-09 |
US7467815B2 (en) | 2008-12-23 |
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